./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c573b473fe5d13973daf8eaca36a6666498a98a ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:14:14,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:14,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:14,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:14,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:14,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:14,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:14,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:14,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:14,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:14,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:14,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:14,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:14,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:14,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:14,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:14,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:14,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:14,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:14,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:14,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:14,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:14,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:14,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:14,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:14,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:14,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:14,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:14,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:14,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:14,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:14,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:14,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:14,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:14,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:14,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:14,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:14,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:14,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:14,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:14,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:14,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:14:14,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:14,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:14,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:14,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:14,737 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:14,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:14,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:14:14,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:14,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:14:14,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:14,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:14,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:14,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:14,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:14:14,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:14,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:14,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:14,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:14,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:14,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:14,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:14,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:14,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:14,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:14,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:14,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:14,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:14,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:14,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:14,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2020-11-28 03:14:15,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:15,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:15,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:15,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:15,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:15,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 03:14:15,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/data/7448bf240/261689d96cea4512b8d1e9985aeb0791/FLAGea8ea3ac6 [2020-11-28 03:14:15,675 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:15,676 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 03:14:15,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/data/7448bf240/261689d96cea4512b8d1e9985aeb0791/FLAGea8ea3ac6 [2020-11-28 03:14:16,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/data/7448bf240/261689d96cea4512b8d1e9985aeb0791 [2020-11-28 03:14:16,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:16,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:16,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:16,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:16,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:16,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2e86a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16, skipping insertion in model container [2020-11-28 03:14:16,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:16,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:16,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:16,252 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:16,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:16,284 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:16,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16 WrapperNode [2020-11-28 03:14:16,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:16,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:16,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:16,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:16,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:16,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:16,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:16,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:16,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... [2020-11-28 03:14:16,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:16,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:16,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:16,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:16,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:14:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:14:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:16,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:16,803 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 03:14:16,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:16 BoogieIcfgContainer [2020-11-28 03:14:16,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:16,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:16,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:16,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:16" (1/3) ... [2020-11-28 03:14:16,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d0ce0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:16, skipping insertion in model container [2020-11-28 03:14:16,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:16" (2/3) ... [2020-11-28 03:14:16,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d0ce0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:16, skipping insertion in model container [2020-11-28 03:14:16,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:16" (3/3) ... [2020-11-28 03:14:16,813 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-11-28 03:14:16,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:16,826 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:14:16,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:14:16,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:16,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:16,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:16,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:16,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:16,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:16,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:16,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 03:14:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:14:16,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:16,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:16,880 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash 520388738, now seen corresponding path program 1 times [2020-11-28 03:14:16,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:16,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770838939] [2020-11-28 03:14:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:17,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770838939] [2020-11-28 03:14:17,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:17,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:17,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160189949] [2020-11-28 03:14:17,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:17,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:17,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:17,260 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-11-28 03:14:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:17,355 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-11-28 03:14:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:17,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:14:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:17,366 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:14:17,366 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:14:17,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:14:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:14:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-28 03:14:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:14:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 03:14:17,402 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 15 [2020-11-28 03:14:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:17,403 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 03:14:17,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 03:14:17,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:14:17,404 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:17,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:17,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:17,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2032115547, now seen corresponding path program 1 times [2020-11-28 03:14:17,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:17,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641836753] [2020-11-28 03:14:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:17,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641836753] [2020-11-28 03:14:17,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:17,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:17,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278707680] [2020-11-28 03:14:17,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:17,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:17,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:17,500 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-11-28 03:14:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:17,594 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 03:14:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:17,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 03:14:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:17,596 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:14:17,596 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:14:17,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:14:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:14:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-28 03:14:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:14:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-28 03:14:17,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2020-11-28 03:14:17,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:17,606 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-28 03:14:17,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:17,606 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-28 03:14:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:14:17,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:17,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:17,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:17,609 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:17,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1904238653, now seen corresponding path program 1 times [2020-11-28 03:14:17,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:17,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110298556] [2020-11-28 03:14:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:17,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110298556] [2020-11-28 03:14:17,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438000139] [2020-11-28 03:14:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:14:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:17,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:14:17,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:18,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:14:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:18,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:14:18,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-11-28 03:14:18,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577131934] [2020-11-28 03:14:18,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:14:18,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:18,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:14:18,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:14:18,249 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 12 states. [2020-11-28 03:14:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:18,513 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-28 03:14:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:14:18,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-11-28 03:14:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:18,517 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:14:18,517 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:14:18,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:14:18,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:14:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-11-28 03:14:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:14:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-28 03:14:18,532 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-11-28 03:14:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:18,534 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-28 03:14:18,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:14:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-28 03:14:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:14:18,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:18,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:18,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:14:18,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:18,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:18,753 INFO L82 PathProgramCache]: Analyzing trace with hash -26308511, now seen corresponding path program 2 times [2020-11-28 03:14:18,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:18,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503751656] [2020-11-28 03:14:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:14:18,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503751656] [2020-11-28 03:14:18,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666473566] [2020-11-28 03:14:18,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:14:18,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:14:18,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:14:18,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:14:18,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:19,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:14:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:19,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:14:19,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-11-28 03:14:19,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009194632] [2020-11-28 03:14:19,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:14:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:14:19,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:14:19,168 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 15 states. [2020-11-28 03:14:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:19,676 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-28 03:14:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:14:19,676 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-11-28 03:14:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:19,677 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:14:19,677 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:14:19,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 03:14:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:14:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:14:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:14:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:14:19,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-28 03:14:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:19,679 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:14:19,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:14:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:14:19,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:14:19,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:14:19,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:14:20,142 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point L40(lines 25 56) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:14:20,143 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,144 INFO L274 CegarLoopResult]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2020-11-28 03:14:20,144 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse0 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0))) (or (and (<= .cse0 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse1 (= ULTIMATE.start_main_~i~0 0) .cse2 (<= .cse0 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0)))) [2020-11-28 03:14:20,144 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,144 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,144 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,144 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L277 CegarLoopResult]: At program point L54(lines 25 56) the Hoare annotation is: true [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2020-11-28 03:14:20,145 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 03:14:20,146 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~p~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-28 03:14:20,146 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-28 03:14:20,146 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-28 03:14:20,146 INFO L270 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-28 03:14:20,146 INFO L274 CegarLoopResult]: For program point L39(lines 25 56) no Hoare annotation was computed. [2020-11-28 03:14:20,146 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-28 03:14:20,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:20 BoogieIcfgContainer [2020-11-28 03:14:20,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:20,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:20,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:20,165 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:20,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:16" (3/4) ... [2020-11-28 03:14:20,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:14:20,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:14:20,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:14:20,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:14:20,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:14:20,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8dfaf066-535b-437d-aa0f-45e7fd0d2556/bin/uautomizer/witness.graphml [2020-11-28 03:14:20,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:20,227 INFO L168 Benchmark]: Toolchain (without parser) took 4204.82 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 63.6 MB in the beginning and 117.1 MB in the end (delta: -53.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:20,228 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:20,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.84 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 70.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:20,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:20,229 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 67.6 MB in the end (delta: 917.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:20,230 INFO L168 Benchmark]: RCFGBuilder took 461.34 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 53.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:20,231 INFO L168 Benchmark]: TraceAbstraction took 3357.72 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 53.2 MB in the beginning and 120.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:20,231 INFO L168 Benchmark]: Witness Printer took 61.30 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 117.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:20,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 51.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.84 ms. Allocated memory is still 94.4 MB. Free memory was 63.4 MB in the beginning and 70.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.60 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 67.6 MB in the end (delta: 917.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 461.34 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 53.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3357.72 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 53.2 MB in the beginning and 120.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 16.1 GB. * Witness Printer took 61.30 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 117.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && !(0 == cond)) && 1 <= p) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && 1 <= leader_len) || ((((1 <= p && i == 0) && 1 <= leader_len) && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 96 SDslu, 226 SDs, 0 SdLazy, 235 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 307 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 325 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 15948 SizeOfPredicates, 16 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...